It is advisable to wear long sleeve when when a student is working in a chemistry lab so that to protect arms from lab chemicals. when someone enter the chemistry lab to wort or to study should be well prepared with appropriate gears and security measure to avoid injury.
The volume that 0.878 mol occupy at the same temperature and pressure is calculated as follows
if 0.274 mol occupy 6.62 L what about 0.878 mol
by cross multiplication
=0.878 x6.62/0.274=21.21 L
Answer:
4.97 moles
Explanation:
There are 6.022*10^23 calcium atoms in 1 mole of Ca
2.99*10^24/6.022*10^23
=4.97 moles
Answer:
Explanation:
Our sample yielded 1g of and 16g of , but our unknown sample yielded 2 times as much for the same amount of .
What does this mean? that the H:O proportion for the unknown sample is twice the H:O proportion for the sample.
What is the H:O proportion for the sample? As we can see from its formula, it's 1:1, therefore the proportion for the unknown formula must be 2:1.
That means, two H atoms for every O atom. We could write that as: and you should recognize that formula, for it is one of the most common compounds on earth, Water.
Weather
Explanation:
Meteorology is the study of weather.
Meteorologists are scientists that helps to predict weather phenomenon around us.
The use several data gathered from different weather stations around to make precise predictions about the likelihood of a particular weather condition.
Meteorologists most times use computer models to predict and forecast both long and short term weather conditions.
learn more:
Weather brainly.com/question/1851697
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